DuraPlus is designed to stay cool on the outside, to provide a hot draft on the inside, to boost stove efficiency, and to provide for a fire-safe design that protects both the chimney and the building. This triple-wall chimney features two insulating layers (ceramic blanket, plus air space). The ceramic blanket insulation is held securely in position, eliminating hot spots common with loose-fill type insulations. In the event of a creosote fire, the compressible blanket insulation permits the chimney liner to expand outwardly in a radial direction. Meets all UL listed requirements.

　　- Stainless steel inner liner to resist corrosive action

　　- Pipe connects with a twist lock connection

　　- Designed with a air cooled inner wall for safe operation

　　- Designed to safely contain a chimney fire